I'd argue that the liberals getting 43% of the vote while scoring as well as they did is largely a function of strategic voting by NDP voters who refused to have a conservative govt. Strategic voting definitely contributed to their low % compared to the number of seats they got - I didn't vote for them in my riding because my region has been con since the 60s. If it had been close, I probably would've considered it.
Worth mentioning I'm a staunch supporter of single vote MMPR, but in ranked choice their "% of votes" would've been higher than it currently is. Those additional votes would still be entirely valid votes, though they are a second choice vote.
In any practical sense (ie with the base assumption there is something to be gained), it doesn't make sense to celebrate Canada electing liberal over cons. Carney has been outspoken from the start, which is largely what made the polls swing SO heavily! He was unequivocal that Canada was not going to bend over for the US, while PP avoided and danced around the question. Had PP rallied behind his "Canada First" slogan and pushed hard against the US as soon as trump began talking, I'm afraid it wouldn't have been such a clear Liberal win.
So beyond being egotistical and happy he can cause such changes in foreign patterns, I don't see how libs benefit him over cons.